@mi3aw_
My problem with him isnt that I hate him or this ship. Its his behavior. I simple dont like it if the other part behaves like a big mean idiot just because that person likes the other one. (Most of the time the male bullies the female.)
That is outside of manga more than stupid. At least I did read some novels were such boys truly lost their possibility of beeing liked. Lockman isnt that different. Teasing her or trying to maintain his image is one thing. BUT he is nothing else then an arrogant asshole towards her. He is insulting her far too often. That also goes too far in terms of rival-romance. If they wouldnt be in love with each other and just rivals it would be ok, but like that is it too much and only annoying. Instead of saying she didnt study enough he could have just answered with a "who knows", while he knows how hard she worked is in such a situation an insult towards her.
He also behaves towards her like he is something above her (in the form he is something better) while he uses the laws he learned (like noble law) which commoners will most likely never have contact with.
He isnt outright abusing her, but he behaves far too much like an arrogant asshole, which makes me question why she even likes him beside his face. BTW this also hits the story hard now since we see more about their relationship than the thing the title implies.